3.9 Solve Multi Step Problems Involving Addition and Subtrac

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A teacher bought 325 pencils and 468 markers. She gave away 187 pencils to another teacher. How many supplies does she have left in total?

Step 1: 325 + 468 = 793 supplies. Step 2: 793 – 187 = 606 supplies left.

Three buses carried 248, 235, and 267 students. After arrival, 189 went into the science museum. How many went to the zoo?

Step 1: 248 + 235 + 267 = 750 students. Step 2: 750 – 189 = 561 went to the zoo.

The library has 5,243 books. Students borrowed 1,468 in September and 1,732 in October. How many books remain?

Step 1: 1,468 + 1,732 = 3,200 borrowed. Step 2: 5,243 – 3,200 = 2,043 books remain.

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